Approximation by rational operators in Lp spaces
✍ Scribed by Dansheng Yu; Songping Zhou
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 193 KB
- Volume
- 282
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The present paper introduces a kind of Kantorovich type Shepard operators. Complete results including direct and converse results, equivalence results are established. As Della Vecchia and Mastroianni ([4], [7]) did, our results involve a weighted modulus of smoothness related to step‐functions φ (x) vanishing algebraically at the endpoints ±1 (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
📜 SIMILAR VOLUMES
## Abstract Boundedness of one‐sided maximal functions, singular integrals and potentials is established in __L__(__I__) spaces, where __I__ is an interval in **R**. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
## Abstract We give conditions for the convergence of approximate identities, both pointwise and in norm, in variable __L__ ^__p__^ spaces. We unify and extend results due to Diening [8], Samko [18] and Sharapudinov [19]. As applications, we give criteria for smooth functions to be dense in the va
## Abstract We study the boundedness of singular Calderón–Zygmund type operators in the spaces __L__^__p__ (·)^(Ω, __ρ__) over a bounded open set in ℝ^__n__^ with the weight __ρ__ (__x__) = $ \prod ^m\_{k=1} $ __w__~__k__~ (|__x__ – __x__~__k__~ |), __x__~__k__~ ∈ $ \bar \Omega $, where __w__~__k